提高机械钻速的钻井液理论与技术研究  

A Study on the Theory and Technology of Drilling Fluids to Increase ROP.

作　　者：孙金声 杨宇平[1,2] 安树明 苏义脑 

机构地区：[1]中国石油集团钻井工程技术研究院,北京 [2]中国石油勘探开发研究院博士后流动站,北京

出　　处：《钻井液与完井液》2009年第2期1-6,共6页Drilling Fluid & Completion Fluid

基　　金：中国石油天然气集团公司应用基础研究项目(06A20403,08A20403);钻井新技术推广项目(2008G-5207)资助

摘　　要：通过对钻井液影响机械钻速的因素进行分析,提出了提高机械钻速钻井液的理论途径及处理剂的分子结构和钻井液性能要求,研制出了提高机械钻速的快速钻井剂KSZJ。通过进行表面张力、吸附效应、压持效应以及对微米及亚微米粒子、钻井液润滑性能、岩心强度的影响等实验评价了KSZJ的性能。在射流钻井模拟实验装置上用不同硬度的岩石进行的实验结果及在吐哈油田、塔里木油田、青海油田、华北油田、吉林油田及新疆油田等的30余口井进行的现场实试结果表明,提高机械钻速的钻井液技术能够将机械钻速提高18%以上,并能够有效解决井壁失稳及减少起下钻过程中的阻卡情况,提速提效效果显著。By analyzing the factors affecting ROP in terms of drilling fluids, a theory of increasing ROP is presented. A fast drilling additive KSZJ was prepared based on the analysis of molecular structure of drilling fluid additives and drilling fluid performance. Laboratory evaluation was done on KSZJ as to the surface tension, adsorption effect, chip holdh-down effect, concentration of particles of micron sizes, friction, the variation of the strengths of cores etc. The application of the technology in more than 30 wells in several oilfield gave an average ROP increase of 18%, and borehole sloughing and friction and pipe sticking during trip were minimized.

关 键 词：钻井液 机械钻速 吸附 快速钻井剂 润湿性 压持效应 

分 类 号：TE254[石油与天然气工程—油气井工程]